Question

8. Find the value of a, if (x+2) is a factor of the polynomial
f(x)=x3 +13x2 + ax + 20
a)-15 b)20
d)32
c)25​

Answer 1

Answer:

correct option is d (32)

Step-by-step explanation:

p(x)=x³+13x²+ax+20

let x = -2

p(-2)= (-2)³+13×(-2)²+a×-2+20

0= -8 + 13× 4 -2a +20

0= -8+20 + 54 -2a

0= 64 -2a

-64 = -2a

64 = 2a

64/2 = a

32 = a

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Answer 2

Step-by-step explanation:

HEY MATE HERE IS YOUR ANSWER